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Finding the Fourth Proportional to 104,980.15, 157,412.40 and 71,737.75

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Solution

The fourth proportional to 104,980.15, 157,412.40 and 71,737.75 is: 107,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,980.15 : 157,412.40 = 71,737.75 : x
  2. Step 2: Convert to fraction form
    104,980.15/157,412.40 = 71,737.75/x
  3. Step 3: Cross multiply
    104,980.15x = 157,412.40 × 71,737.75
  4. Step 4: Simplify right side
    104,980.15x = 11,292,411,398.10
  5. Step 5: Solve for x
    x = 11,292,411,398.10/104,980.15
  6. Step 6: Final answer
    x = 107,567.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.